The total temperature tolerance of the constant temperature and humidity test chamber is ± 2 ° C or ± 3 ° C, which is determined in consideration of the absolute error of measurement, the slow change of temperature, and the temperature change in the working space, but in order to maintain the relative humidity within the specified tolerance Within the range, the temperature difference between any two points in the working space must be maintained within a small range at any time. If the temperature difference exceeds 1K, the humidity condition will not meet the requirements. In order to maintain the specified humidity, the temperature is short The fluctuation should be maintained at ± 0.5 ℃, and the temperature of the test sample should be stabilized at 25 ℃ ± 3 ℃.
1. Before placing the test sample in the constant temperature and humidity box, first place the test box sample in another box;
2. After placing the test sample in the constant temperature and humidity test chamber, adjust the temperature of the chamber to 25 ° C ± 3 ° C and keep it until the temperature of the test sample reaches a stable temperature;
Regardless of which of these two methods is used, the relative humidity must be within the limits under the standard atmospheric conditions for the test to reach the temperature stabilization time. After the sample is stabilized in the constant temperature and humidity chamber, the relative humidity in the chamber should rise To not less than 95%, the ambient temperature test is 25 ℃ ± 3 ℃.
Wenzhou Vigorous Pet Products Co.,Ltd , http://www.vigorouspet.com